From: Stefan Berger <stefanb@linux.vnet.ibm.com>
To: jarkko.sakkinen@linux.intel.com, tpmdd-devel@lists.sourceforge.net
Cc: linux-security-module@vger.kernel.org,
linux-kernel@vger.kernel.org, jgunthorpe@obsidianresearch.com,
Stefan Berger <stefanb@linux.vnet.ibm.com>
Subject: [PATCH v6 2/3] tpm: vtpm_proxy: Implement request_locality function.
Date: Wed, 24 May 2017 17:39:40 -0400 [thread overview]
Message-ID: <1495661981-27249-3-git-send-email-stefanb@linux.vnet.ibm.com> (raw)
In-Reply-To: <1495661981-27249-1-git-send-email-stefanb@linux.vnet.ibm.com>
Implement the request_locality function. To set the locality on the
backend we define vendor-specific TPM 1.2 and TPM 2 ordinals and send
a command to the backend to set the locality for the next commands.
To avoid recursing into requesting the locality, we set the
TPM_TRANSMIT_RAW flag when calling tpm_transmit_cmd. To avoid recursing
into TPM 2 space related commands, we set the space parameter to NULL.
Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
---
drivers/char/tpm/tpm-interface.c | 1 +
drivers/char/tpm/tpm_vtpm_proxy.c | 36 ++++++++++++++++++++++++++++++++++++
include/uapi/linux/vtpm_proxy.h | 4 ++++
3 files changed, 41 insertions(+)
diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c
index 2eacda2..876d45f 100644
--- a/drivers/char/tpm/tpm-interface.c
+++ b/drivers/char/tpm/tpm-interface.c
@@ -537,6 +537,7 @@ ssize_t tpm_transmit_cmd(struct tpm_chip *chip, struct tpm_space *space,
return 0;
}
+EXPORT_SYMBOL_GPL(tpm_transmit_cmd);
#define TPM_DIGEST_SIZE 20
#define TPM_RET_CODE_IDX 6
diff --git a/drivers/char/tpm/tpm_vtpm_proxy.c b/drivers/char/tpm/tpm_vtpm_proxy.c
index 751059d..66024bf 100644
--- a/drivers/char/tpm/tpm_vtpm_proxy.c
+++ b/drivers/char/tpm/tpm_vtpm_proxy.c
@@ -371,6 +371,41 @@ static bool vtpm_proxy_tpm_req_canceled(struct tpm_chip *chip, u8 status)
return ret;
}
+static int vtpm_proxy_request_locality(struct tpm_chip *chip, int locality)
+{
+ struct tpm_buf buf;
+ int rc;
+ const struct tpm_output_header *header;
+
+ if (chip->flags & TPM_CHIP_FLAG_TPM2)
+ rc = tpm_buf_init(&buf, TPM2_ST_SESSIONS,
+ TPM2_CC_SET_LOCALITY);
+ else
+ rc = tpm_buf_init(&buf, TPM_TAG_RQU_COMMAND,
+ TPM_ORD_SET_LOCALITY);
+ if (rc)
+ return rc;
+ tpm_buf_append_u8(&buf, locality);
+
+ rc = tpm_transmit_cmd(chip, NULL, buf.data, tpm_buf_length(&buf), 0,
+ TPM_TRANSMIT_UNLOCKED | TPM_TRANSMIT_RAW,
+ "attempting to set locality");
+ if (rc < 0) {
+ locality = rc;
+ goto out;
+ }
+
+ header = (const struct tpm_output_header *)buf.data;
+ rc = be32_to_cpu(header->return_code);
+ if (rc)
+ locality = -1;
+
+out:
+ tpm_buf_destroy(&buf);
+
+ return locality;
+}
+
static const struct tpm_class_ops vtpm_proxy_tpm_ops = {
.flags = TPM_OPS_AUTO_STARTUP,
.recv = vtpm_proxy_tpm_op_recv,
@@ -380,6 +415,7 @@ static const struct tpm_class_ops vtpm_proxy_tpm_ops = {
.req_complete_mask = VTPM_PROXY_REQ_COMPLETE_FLAG,
.req_complete_val = VTPM_PROXY_REQ_COMPLETE_FLAG,
.req_canceled = vtpm_proxy_tpm_req_canceled,
+ .request_locality = vtpm_proxy_request_locality,
};
/*
diff --git a/include/uapi/linux/vtpm_proxy.h b/include/uapi/linux/vtpm_proxy.h
index a69e991..58ac73c 100644
--- a/include/uapi/linux/vtpm_proxy.h
+++ b/include/uapi/linux/vtpm_proxy.h
@@ -46,4 +46,8 @@ struct vtpm_proxy_new_dev {
#define VTPM_PROXY_IOC_NEW_DEV _IOWR(0xa1, 0x00, struct vtpm_proxy_new_dev)
+/* vendor specific commands to set locality */
+#define TPM2_CC_SET_LOCALITY 0x20001000
+#define TPM_ORD_SET_LOCALITY 0x20001000
+
#endif /* _UAPI_LINUX_VTPM_PROXY_H */
--
2.4.3
WARNING: multiple messages have this Message-ID (diff)
From: stefanb@linux.vnet.ibm.com (Stefan Berger)
To: linux-security-module@vger.kernel.org
Subject: [PATCH v6 2/3] tpm: vtpm_proxy: Implement request_locality function.
Date: Wed, 24 May 2017 17:39:40 -0400 [thread overview]
Message-ID: <1495661981-27249-3-git-send-email-stefanb@linux.vnet.ibm.com> (raw)
In-Reply-To: <1495661981-27249-1-git-send-email-stefanb@linux.vnet.ibm.com>
Implement the request_locality function. To set the locality on the
backend we define vendor-specific TPM 1.2 and TPM 2 ordinals and send
a command to the backend to set the locality for the next commands.
To avoid recursing into requesting the locality, we set the
TPM_TRANSMIT_RAW flag when calling tpm_transmit_cmd. To avoid recursing
into TPM 2 space related commands, we set the space parameter to NULL.
Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
---
drivers/char/tpm/tpm-interface.c | 1 +
drivers/char/tpm/tpm_vtpm_proxy.c | 36 ++++++++++++++++++++++++++++++++++++
include/uapi/linux/vtpm_proxy.h | 4 ++++
3 files changed, 41 insertions(+)
diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c
index 2eacda2..876d45f 100644
--- a/drivers/char/tpm/tpm-interface.c
+++ b/drivers/char/tpm/tpm-interface.c
@@ -537,6 +537,7 @@ ssize_t tpm_transmit_cmd(struct tpm_chip *chip, struct tpm_space *space,
return 0;
}
+EXPORT_SYMBOL_GPL(tpm_transmit_cmd);
#define TPM_DIGEST_SIZE 20
#define TPM_RET_CODE_IDX 6
diff --git a/drivers/char/tpm/tpm_vtpm_proxy.c b/drivers/char/tpm/tpm_vtpm_proxy.c
index 751059d..66024bf 100644
--- a/drivers/char/tpm/tpm_vtpm_proxy.c
+++ b/drivers/char/tpm/tpm_vtpm_proxy.c
@@ -371,6 +371,41 @@ static bool vtpm_proxy_tpm_req_canceled(struct tpm_chip *chip, u8 status)
return ret;
}
+static int vtpm_proxy_request_locality(struct tpm_chip *chip, int locality)
+{
+ struct tpm_buf buf;
+ int rc;
+ const struct tpm_output_header *header;
+
+ if (chip->flags & TPM_CHIP_FLAG_TPM2)
+ rc = tpm_buf_init(&buf, TPM2_ST_SESSIONS,
+ TPM2_CC_SET_LOCALITY);
+ else
+ rc = tpm_buf_init(&buf, TPM_TAG_RQU_COMMAND,
+ TPM_ORD_SET_LOCALITY);
+ if (rc)
+ return rc;
+ tpm_buf_append_u8(&buf, locality);
+
+ rc = tpm_transmit_cmd(chip, NULL, buf.data, tpm_buf_length(&buf), 0,
+ TPM_TRANSMIT_UNLOCKED | TPM_TRANSMIT_RAW,
+ "attempting to set locality");
+ if (rc < 0) {
+ locality = rc;
+ goto out;
+ }
+
+ header = (const struct tpm_output_header *)buf.data;
+ rc = be32_to_cpu(header->return_code);
+ if (rc)
+ locality = -1;
+
+out:
+ tpm_buf_destroy(&buf);
+
+ return locality;
+}
+
static const struct tpm_class_ops vtpm_proxy_tpm_ops = {
.flags = TPM_OPS_AUTO_STARTUP,
.recv = vtpm_proxy_tpm_op_recv,
@@ -380,6 +415,7 @@ static const struct tpm_class_ops vtpm_proxy_tpm_ops = {
.req_complete_mask = VTPM_PROXY_REQ_COMPLETE_FLAG,
.req_complete_val = VTPM_PROXY_REQ_COMPLETE_FLAG,
.req_canceled = vtpm_proxy_tpm_req_canceled,
+ .request_locality = vtpm_proxy_request_locality,
};
/*
diff --git a/include/uapi/linux/vtpm_proxy.h b/include/uapi/linux/vtpm_proxy.h
index a69e991..58ac73c 100644
--- a/include/uapi/linux/vtpm_proxy.h
+++ b/include/uapi/linux/vtpm_proxy.h
@@ -46,4 +46,8 @@ struct vtpm_proxy_new_dev {
#define VTPM_PROXY_IOC_NEW_DEV _IOWR(0xa1, 0x00, struct vtpm_proxy_new_dev)
+/* vendor specific commands to set locality */
+#define TPM2_CC_SET_LOCALITY 0x20001000
+#define TPM_ORD_SET_LOCALITY 0x20001000
+
#endif /* _UAPI_LINUX_VTPM_PROXY_H */
--
2.4.3
--
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WARNING: multiple messages have this Message-ID (diff)
From: Stefan Berger <stefanb-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
To: jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org,
tpmdd-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Cc: linux-security-module-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [PATCH v6 2/3] tpm: vtpm_proxy: Implement request_locality function.
Date: Wed, 24 May 2017 17:39:40 -0400 [thread overview]
Message-ID: <1495661981-27249-3-git-send-email-stefanb@linux.vnet.ibm.com> (raw)
In-Reply-To: <1495661981-27249-1-git-send-email-stefanb-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
Implement the request_locality function. To set the locality on the
backend we define vendor-specific TPM 1.2 and TPM 2 ordinals and send
a command to the backend to set the locality for the next commands.
To avoid recursing into requesting the locality, we set the
TPM_TRANSMIT_RAW flag when calling tpm_transmit_cmd. To avoid recursing
into TPM 2 space related commands, we set the space parameter to NULL.
Signed-off-by: Stefan Berger <stefanb-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
---
drivers/char/tpm/tpm-interface.c | 1 +
drivers/char/tpm/tpm_vtpm_proxy.c | 36 ++++++++++++++++++++++++++++++++++++
include/uapi/linux/vtpm_proxy.h | 4 ++++
3 files changed, 41 insertions(+)
diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c
index 2eacda2..876d45f 100644
--- a/drivers/char/tpm/tpm-interface.c
+++ b/drivers/char/tpm/tpm-interface.c
@@ -537,6 +537,7 @@ ssize_t tpm_transmit_cmd(struct tpm_chip *chip, struct tpm_space *space,
return 0;
}
+EXPORT_SYMBOL_GPL(tpm_transmit_cmd);
#define TPM_DIGEST_SIZE 20
#define TPM_RET_CODE_IDX 6
diff --git a/drivers/char/tpm/tpm_vtpm_proxy.c b/drivers/char/tpm/tpm_vtpm_proxy.c
index 751059d..66024bf 100644
--- a/drivers/char/tpm/tpm_vtpm_proxy.c
+++ b/drivers/char/tpm/tpm_vtpm_proxy.c
@@ -371,6 +371,41 @@ static bool vtpm_proxy_tpm_req_canceled(struct tpm_chip *chip, u8 status)
return ret;
}
+static int vtpm_proxy_request_locality(struct tpm_chip *chip, int locality)
+{
+ struct tpm_buf buf;
+ int rc;
+ const struct tpm_output_header *header;
+
+ if (chip->flags & TPM_CHIP_FLAG_TPM2)
+ rc = tpm_buf_init(&buf, TPM2_ST_SESSIONS,
+ TPM2_CC_SET_LOCALITY);
+ else
+ rc = tpm_buf_init(&buf, TPM_TAG_RQU_COMMAND,
+ TPM_ORD_SET_LOCALITY);
+ if (rc)
+ return rc;
+ tpm_buf_append_u8(&buf, locality);
+
+ rc = tpm_transmit_cmd(chip, NULL, buf.data, tpm_buf_length(&buf), 0,
+ TPM_TRANSMIT_UNLOCKED | TPM_TRANSMIT_RAW,
+ "attempting to set locality");
+ if (rc < 0) {
+ locality = rc;
+ goto out;
+ }
+
+ header = (const struct tpm_output_header *)buf.data;
+ rc = be32_to_cpu(header->return_code);
+ if (rc)
+ locality = -1;
+
+out:
+ tpm_buf_destroy(&buf);
+
+ return locality;
+}
+
static const struct tpm_class_ops vtpm_proxy_tpm_ops = {
.flags = TPM_OPS_AUTO_STARTUP,
.recv = vtpm_proxy_tpm_op_recv,
@@ -380,6 +415,7 @@ static const struct tpm_class_ops vtpm_proxy_tpm_ops = {
.req_complete_mask = VTPM_PROXY_REQ_COMPLETE_FLAG,
.req_complete_val = VTPM_PROXY_REQ_COMPLETE_FLAG,
.req_canceled = vtpm_proxy_tpm_req_canceled,
+ .request_locality = vtpm_proxy_request_locality,
};
/*
diff --git a/include/uapi/linux/vtpm_proxy.h b/include/uapi/linux/vtpm_proxy.h
index a69e991..58ac73c 100644
--- a/include/uapi/linux/vtpm_proxy.h
+++ b/include/uapi/linux/vtpm_proxy.h
@@ -46,4 +46,8 @@ struct vtpm_proxy_new_dev {
#define VTPM_PROXY_IOC_NEW_DEV _IOWR(0xa1, 0x00, struct vtpm_proxy_new_dev)
+/* vendor specific commands to set locality */
+#define TPM2_CC_SET_LOCALITY 0x20001000
+#define TPM_ORD_SET_LOCALITY 0x20001000
+
#endif /* _UAPI_LINUX_VTPM_PROXY_H */
--
2.4.3
------------------------------------------------------------------------------
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next prev parent reply other threads:[~2017-05-24 21:41 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-24 21:39 [PATCH v6 0/3] Extend the vTPM proxy driver to pass locality Stefan Berger
2017-05-24 21:39 ` Stefan Berger
2017-05-24 21:39 ` [PATCH v6 1/3] tpm: Introduce flag TPM_TRANSMIT_RAW Stefan Berger
2017-05-24 21:39 ` Stefan Berger
2017-05-24 21:39 ` Stefan Berger
2017-05-24 22:18 ` Jarkko Sakkinen
2017-05-24 22:18 ` Jarkko Sakkinen
2017-05-24 22:59 ` Stefan Berger
2017-05-24 22:59 ` Stefan Berger
2017-05-24 21:39 ` Stefan Berger [this message]
2017-05-24 21:39 ` [PATCH v6 2/3] tpm: vtpm_proxy: Implement request_locality function Stefan Berger
2017-05-24 21:39 ` Stefan Berger
2017-05-24 22:21 ` Jarkko Sakkinen
2017-05-24 22:21 ` Jarkko Sakkinen
2017-05-24 23:03 ` Stefan Berger
2017-05-24 23:03 ` Stefan Berger
2017-05-25 0:09 ` Jarkko Sakkinen
2017-05-25 0:09 ` Jarkko Sakkinen
2017-06-02 0:34 ` Stefan Berger
2017-06-02 0:34 ` Stefan Berger
2017-06-04 15:43 ` Jarkko Sakkinen
2017-06-04 15:43 ` Jarkko Sakkinen
2017-06-04 16:27 ` Jarkko Sakkinen
2017-06-04 16:27 ` Jarkko Sakkinen
2017-06-04 16:27 ` Jarkko Sakkinen
2017-06-04 20:09 ` Stefan Berger
2017-06-04 20:09 ` Stefan Berger
2017-05-24 21:39 ` [PATCH v6 3/3] tpm: vtpm_proxy: Prevent userspace from sending driver command Stefan Berger
2017-05-24 21:39 ` Stefan Berger
2017-05-24 21:39 ` Stefan Berger
2017-05-24 22:22 ` Jarkko Sakkinen
2017-05-24 22:22 ` Jarkko Sakkinen
2017-05-25 0:10 ` [tpmdd-devel] " Jarkko Sakkinen
2017-05-25 0:10 ` Jarkko Sakkinen
2017-05-25 0:10 ` [tpmdd-devel] " Jarkko Sakkinen
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